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Title:
SWITCHING CONTROL METHOD AND APPARATUS FOR MODULAR CONVERTER, AND WIND POWER CONVERTER
Document Type and Number:
WIPO Patent Application WO/2019/148800
Kind Code:
A1
Abstract:
Disclosed are a switching control method and apparatus for a modular converter, and a wind power converter. The switching control method for a modular converter comprises: acquiring an output voltage vector and an output current vector of a converter; receiving an operation state switching instruction; determining, according to the output voltage vector, the output current vector, the number of converter sub-modules put into use after the operation state of the converter is switched, and a pre-acquired number of converter sub-modules currently put into use, the voltage value and phase of a pre-set voltage vector output by an inverter bridge arm of the converter; and issuing, according to the voltage value and phase of the pre-set voltage vector output by the inverter bridge arm, a control signal to the converter sub-modules put into use. According to the switching control method for a modular converter in the embodiments of the present invention, a current impact produced in a transient process of converter switching can be avoided.

Inventors:
FU, Songge (No. 8, Boxing 1st Road Beijing Economic & Technological Development Zone, Daxing District, Beijing 6, 100176, CN)
Application Number:
CN2018/100491
Publication Date:
August 08, 2019
Filing Date:
August 14, 2018
Export Citation:
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Assignee:
BEIJING ETECHWIN ELECTRIC CO., LTD. (No. 8, Boxing 1st Road Beijing Economic & Technological Development Zone, Daxing District, Beijing 6, 100176, CN)
International Classes:
H02J3/38; H02M5/458; H02M7/483
Foreign References:
CN102820671A2012-12-12
CN105141159A2015-12-09
CN106208649A2016-12-07
US20160072375A12016-03-10
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (Suite 1601, Tower E2 The Towers,Oriental Plaza, No.1 East Chang An Ave, Dongcheng District Beijing 8, 100738, CN)
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